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ADP8863 데이터시트 PDF




Analog Devices에서 제조한 전자 부품 ADP8863은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

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부품번호 ADP8863 기능
기능 7-Channel Fun Lighting LED Driver
제조업체 Analog Devices
로고 Analog Devices 로고


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ADP8863 데이터시트, 핀배열, 회로
FEATURES
Automated blinking and funlight timing for each LED driver
16 programmable fade in and fade out times
0.1 sec to 5.5 sec
Selectable linear, square, or cubic fade rates
7 independent and programmable LED drivers
7 drivers capable of 30 mA (maximum)
1 driver also capable of 60 mA (maximum)
Programmable maximum current limit (128 levels)
Separate and independent controls for backlight LEDs
Backlight fade override
Up to two built-in comparator inputs with programmable
modes for ambient light sensing
Charge pump with automatic gain selection of 1×, 1.5×, and
2× for maximum efficiency
Standby mode for <1 μA current consumption
I2C-compatible interface for all programming
Dedicated reset pin and built-in power-on reset (POR)
Short-circuit, overvoltage, and overtemperature protection
Internal soft start to limit inrush currents
Input-to-output isolation during faults or shutdown
Operation down to VIN = 2.5 V with undervoltage lockout
(UVLO) at VIN = 2.0 V
Small lead frame chip scale package (LFCSP)
APPLICATIONS
LED indication
Funlight indicator lighting
Keypad backlighting
RGB LED color generation and mixing
General backlighting of small format displays
GENERAL DESCRIPTION
The ADP8863 combines a powerful charge pump driver with
advanced autonomous LED lighting features. It allows as
many as seven LEDs to be independently driven up to 30 mA
(maximum). The seventh LED can also be driven to 60 mA
(maximum). All LEDs are programmable for maximum current
and fade in/fade out times via the I2C interface.
Additionally, automated blinking routines can be independently
programmed and enabled for all seven LED channels. These
LEDs can also be combined into groups to reduce the processor
instructions.
Charge Pump, 7-Channelwww.DataSheet4U.com
Fun Lighting LED Driver
ADP8863
TYPICAL OPERATING CIRCUIT
VIN
CIN
1µF
VALS
PHOTO
SENSOR
D1 D2 D3 D4 D5 D6 D7 CMP_IN
0.1µF
VOUT
VDDIO
COUT
1µF
nRST
nINT
SDA
SCL
ADP8863
C1+
C1
C1– 1µF
C2+
C2
C2– 1µF
GND1
GND2
Figure 1.
This entire configuration is driven by a two-capacitor charge pump
with gains of 1×, 1.5×, and 2×. The charge pump is capable of
driving a maximum IOUT of 240 mA from a supply of 2.5 V to
5.5 V. The device includes a variety of safety features including
short-circuit, overvoltage, and overtemperature protection.
These features allow easy implementation of a safe and robust
design. Additionally, input inrush currents are limited via an
integrated soft start combined with controlled input-to-output
isolation.
The ADP8863 is available in a compact lead frame chip scale
package (LFCSP).
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2010 Analog Devices, Inc. All rights reserved.




ADP8863 pdf, 반도체, 판매, 대치품
ADP8863
www.DataSheet4U.com
Parameter
Output Voltage Threshold
Exit Soft Start
Short-Circuit Protection
Output Overvoltage Protection
Activation Level
OVP Recovery Hysteresis
Thermal Shutdown
Threshold
Hysteresis
Isolation from Input to Output
During Fault
Time to Validate a Fault
I2C INTERFACE
Operating VDDIO Voltage
Logic Low Input2
Logic High Input3
I2C TIMING SPECIFICATIONS
Delay from Reset Deassertion to
I2C Access
SCL Frequency
SCL High Time
SCL Low Time
Setup Time
Data
Repeated Start
Stop Condition
Hold Time
Data
Start/Repeated Start
Bus Free Time (Stop and Start
Conditions)
Rise Time (SCL and SDA)
Fall Time (SCL and SDA)
Pulse Width of Suppressed Spike
Capacitive Load per Bus Line
Symbol
VOUT
VOUT(START)
VOUT(SC)
VOVP
Test Conditions/Comments
VOUT rising
VOUT falling
VOVP(HYS)
TSD
TSD(HYS)
IOUTLKG
tFAULT
VIN = 5.5 V, VOUT = 0 V, Bit nSTBY = 0
VDDIO
VIL
VIH
tRESET
fSCL
tHIGH
tLOW
VIN = 3.6 V
VIN = 3.6 V
Guaranteed by design
tSU, DAT
tSU, STA
tSU, STO
tHD, DAT
tHD, STA
tBUF
tR
tF
tSP
CB
Min
1.30
0.6
1.3
100
0.6
0.6
0
0.6
1.3
20 + 0.1 CB
20 + 0.1 CB
0
Typ Max Unit
0.92 × VIN
0.55 × VIN
V
V
5.8 V
500 mV
150 °C
20 °C
1.5 μA
2 μs
5.5 V
0.6 V
V
20 μs
400 kHz
μs
μs
ns
μs
μs
0.9 μs
μs
μs
300 ns
300 ns
50 ns
400 pF
1 Current source matching is calculated by dividing the difference between the maximum and minimum current from the sum of the maximum and minimum.
2 VIL is a function of the input voltage. See Figure 15 in the Typical Performance Characteristics section for typical values over operating ranges.
3 VIH is a function of the input voltage. See Figure 15 in the Typical Performance Characteristics section for typical values over operating ranges.
I2C TIMING DIAGRAM
SDA
tLOW
tR tSU, DAT
tF tF
tHD, STA
SCL
S tHD, DAT
S = START CONDITION
Sr = REPEATED START CONDITION
P = STOP CONDITION
tHIGH
tSU, STA
Sr
Figure 2. I2C Interface Timing Diagram
tSP tR
tBUF
tSU, STO
P
S
Rev. 0 | Page 4 of 48

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ADP8863 전자부품, 판매, 대치품
ADP8863www.DataSheet4U.com
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 3.6 V, SCL = 2.7 V, SDA = 2.7 V, nRST = 2.7 V, VD1:D7 = 0.4 V, CIN = 1 μF, Capacitor C1 = 1 μF, Capacitor C2 = 1 μF, COUT = 1 μF,
TA= 25°C, unless otherwise noted.
2.0
IOUT = NO LOAD
1.8
1.6
1.4
35
VIN = 3.6V
ID1:D7 = 30mA
30
25
1.2
1.0
0.8
0.6
0.4
0.2
0
1.5
–40°C
+25°C
+85°C
+105°C
2.0 2.5 3.0 3.5 4.0 4.5 5.0
VIN (V)
Figure 4. Typical Quiescent Current, G = 1×
5.5
20
15 D1
D2
10 D3
D4
D5
5 D6
D7
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
VHR (V)
Figure 7. Typical Diode Current vs. Current Sink Headroom Voltage (VHR)
5.0
IOUT = NO LOAD
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
–40°C
+25°C
0.5 +85°C
+105°C
0
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
VIN (V)
Figure 5. Typical Quiescent Current, G = 2×, IQ(ACTIVE)
35
VD1:D7 = 0.4V
34
33
32
31
30
29
28
27
26
25
2.0
2.5 3.0 3.5 4.0 4.5 5.0
VIN (V)
Figure 8. Typical Diode Matching vs. VIN
D1
D2
D3
D4
D5
D6
D7
5.5
10 6
SCL = SDA = 0V
nRST = 2.7V
–40°C
+25°C
VIN = 3.6V
ID1:D7 = 30mA
5 +85°C
1 +105°C
4
0.1 3
0.01
0.001
0
1234
VIN (V)
Figure 6. Typical Standby IQ vs. VIN
–40°C
+25°C
+85°C
+105°C
56
2
1
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
VHR (V)
Figure 9. Typical Diode Matching vs. Current Sink Headroom Voltage (VHR)
Rev. 0 | Page 7 of 48

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